In page edit mode, type ‘/ex’, then the macro appears in the list.

Just a second. An empty table will appear.

It allows you to edit a table or import your Excel file from File > Import > Excel menu.

After editing or importing, push the ‘Save’ button then, ‘Exit to Confluence’ button.

You see the preview of a table.

After you save the page, you can see the table on the page.👍